Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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F04B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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43/00
Machines, pumps, or pumping installations having flexible working members
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F04B43/12
having peristaltic action
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F04B43/1253
by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
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F04B43/1261
the rollers being placed at the outside of the tubular flexible member
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